10020102020021 has 2 divisors, whose sum is σ = 10020102020022. Its totient is φ = 10020102020020.

The previous prime is 10020102019979. The next prime is 10020102020053. The reversal of 10020102020021 is 12002020102001.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9081604144900 + 938497875121 = 3013570^2 + 968761^2 .

It is a cyclic number.

It is not a de Polignac number, because 10020102020021 - 2³⁸ = 9745224113077 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10020102019984 and 10020102020011.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10020101020021) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5010051010010 + 5010051010011.

It is an arithmetic number, because the mean of its divisors is an integer number (5010051010011).

Almost surely, 2^{10020102020021} is an apocalyptic number.

It is an amenable number.

10020102020021 is a deficient number, since it is larger than the sum of its proper divisors (1).

10020102020021 is an equidigital number, since it uses as much as digits as its factorization.

10020102020021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 16, while the sum is 11.

Adding to 10020102020021 its reverse (12002020102001), we get a palindrome (22022122122022).

The spelling of 10020102020021 in words is "ten trillion, twenty billion, one hundred two million, twenty thousand, twenty-one".